summaryrefslogtreecommitdiff
path: root/drivers/clocksource/clksrc-of.c
diff options
context:
space:
mode:
authorStephen Warren <swarren@nvidia.com>2012-11-19 16:41:20 -0700
committerStephen Warren <swarren@nvidia.com>2013-01-02 11:07:43 -0700
commitae278a935f086775e8ae31a8ec9f7224ea25ea3c (patch)
treeefd3d6d7c29271af8acb283b2cc8ffd6dc39570b /drivers/clocksource/clksrc-of.c
parent6bb27d7349db51b50c40534710fe164ca0d58902 (diff)
clocksource: add common of_clksrc_init() function
It is desirable to move all clocksource drivers to drivers/clocksource, yet each requires its own initialization function. We'd rather not pollute <linux/> with a header for each function. Instead, create a single of_clksrc_init() function which will determine which clocksource driver to initialize based on device tree. Based on a similar patch for drivers/irqchip by Thomas Petazzoni. Signed-off-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'drivers/clocksource/clksrc-of.c')
-rw-r--r--drivers/clocksource/clksrc-of.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/clocksource/clksrc-of.c b/drivers/clocksource/clksrc-of.c
new file mode 100644
index 000000000000..bdabdaa8d00f
--- /dev/null
+++ b/drivers/clocksource/clksrc-of.c
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/init.h>
+#include <linux/of.h>
+
+extern struct of_device_id __clksrc_of_table[];
+
+static const struct of_device_id __clksrc_of_table_sentinel
+ __used __section(__clksrc_of_table_end);
+
+void __init clocksource_of_init(void)
+{
+ struct device_node *np;
+ const struct of_device_id *match;
+ void (*init_func)(void);
+
+ for_each_matching_node_and_match(np, __clksrc_of_table, &match) {
+ init_func = match->data;
+ init_func();
+ }
+}